To acquire knowledge, one must study; but to acquire wisdom, one must observe.

Life can only be understood backward, but it must be lived forwards.

Where there is shouting, there is no true knowledge.

Knowledge is the eye of desire and can become the pilot of the soul.

There is no greater impediment to the advancement of knowledge than the ambiguity of words.

The gift of fantasy has meant more to me than my talent for absorbing positive knowledge.

Knowledge comes from the past, so it's safe. It is also out of date. It's the opposite of originality... Experience is the opposite of being creative.

Success is a science; if you have the conditions, you get the result.

Those who have the knowledge, don't predict. Those who predict, don't have knowledge.

Genius ain't anything more than elegant common sense.